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公开(公告)号：US20240228419A1
公开(公告)日：2024-07-11
申请号：US18554816
申请日：2022-04-21
IPC分类号： C07C51/47 , B01D53/62 , B01D53/78 , B01D53/96 , B01D61/44 , C07C45/41 , C07C51/15 , C25B1/04 , C25B15/08
CPC分类号： C07C51/47 , B01D53/62 , B01D53/78 , B01D53/965 , B01D61/445 , C07C45/41 , C07C51/15 , C25B1/04 , C25B15/081 , B01D2251/604 , B01D2257/504
摘要： The invention concerns a process and modular system for producing formic acid from a source of carbon dioxide. The process according to the invention comprises (a) a carbon capture step wherein a source of carbon dioxide is contacted with an alkaline solution to obtain a solution comprising carbonate and/or bicarbonate; optionally (b) subjecting the solution comprising carbonate and/or bicarbonate to alkaline water electrolysis, wherein carbonate present in the solution comprising carbonate and/or bicarbonate is converted to bicarbonate and H2O is converted into H2 and O2; (c) subjecting the solution comprising carbonate and/or bicarbonate to a hydrogenation step in the presence of a catalyst to obtain a solution comprising formate; and (d) subjecting the solution comprising formate obtained in step (c) to bipolar membrane electrodialysis to obtain a concentrated formic acid solution and a recovered alkaline solution, wherein the recovered alkaline solution obtained in step (d) is recycled back to step (a). The concentrated formic acid solution obtained from step (d) may be subjected to a hydrogenation step in the presence of a hydrogenation catalyst to obtain a concentrated formaldehyde solution.
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公开(公告)号：US20240198254A1
公开(公告)日：2024-06-20
申请号：US18555587
申请日：2022-04-27
IPC分类号： B01D15/18 , C07C37/82 , C07C51/47 , C07D311/78
CPC分类号： B01D15/185 , B01D15/1828 , B01D15/1842 , C07C37/82 , C07C51/47 , C07D311/78 , B01D2215/024
摘要： A method and apparatus for isolating a first substance from a mixture by chromatography, the mixture including at least a second substance which in the chromatography is subject to a greater retention than the first substance, and having a third substance which in the chromatography is subject to a lower retention than the first substance. The mixture is supplied to a chromatography apparatus having multiple interconnected chromatography columns. The apparatus is supplied with the mixture and an eluent, and the second substance is withdrawn as an extract and the first substance as a raffinate. The third substance is withdrawn as an extract. Usefully the third substance and the second substance are withdrawn jointly as an extract.
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公开(公告)号：US11897840B2
公开(公告)日：2024-02-13
申请号：US17590483
申请日：2022-02-01
发明人： Ethan Novek
摘要： The present application pertains to methods for making metal oxides and/or citric acid. In one embodiment, the application pertains to a process for producing calcium oxide, magnesium oxide, or both from a material comprising calcium and magnesium. The process may include reacting a material comprising calcium carbonate and magnesium carbonate. Separating, concentrating, and calcining may lead to the production of oxides such as calcium oxide or magnesium oxide. In other embodiments the application pertains to methods for producing an alkaline-earth oxide and a carboxylic acid from an alkaline earth cation-carboxylic acid anion salt. Such processes may include, for example, reacting an alkaline-earth cation-carboxylic acid anion salt with aqueous sulfur dioxide to produce aqueous alkaline-earth-bisulfite and aqueous carboxylic acid solution. Other useful steps may include desorbing, separating, and/or calcining.
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公开(公告)号：US20230406806A1
公开(公告)日：2023-12-21
申请号：US18460239
申请日：2023-09-01
申请人： NIACET CORPORATION
CPC分类号： C07C51/412 , C07C51/47
摘要： A calcium carboxylate is prepared by reacting water, calcium oxide, and a compound of formula (I):
wherein R is a C1-C3 alkyl and R1 is a C1 or C2 alkyl. The reaction solution is heated to remove an amount of a co-product from the reaction solution. The calcium carboxylate may be recovered in a solid form from the reaction solution.-
公开(公告)号：US20230382841A1
公开(公告)日：2023-11-30
申请号：US18198664
申请日：2023-05-17
发明人： Ethan NOVEK
摘要： The present application pertains to processes producing oxides using a weak acid intermediate. In one embodiment a material comprising calcium carbonate is reacted with a solution comprising aqueous carboxylic acid to form a gas comprising carbon dioxide and a solution comprising aqueous calcium carboxylate. The solution comprising aqueous calcium carboxylate is reacted with sodium sulfate to form a solution comprising aqueous sodium carboxylate and a solid comprising calcium sulfate. The solution comprising aqueous sodium carboxylate is reacted with sulfur dioxide to form sodium sulfite and an aqueous carboxylic acid. The sodium sulfite is separated from said aqueous carboxylic acid and reacted to form a solid comprising calcium sulfite which is decomposed to form calcium oxide and sulfur dioxide.
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公开(公告)号：US20230265036A1
公开(公告)日：2023-08-24
申请号：US18111088
申请日：2023-02-17
CPC分类号： C07C51/12 , B01D3/06 , B01D3/143 , B01D5/006 , B01D53/1431 , B01D53/1487 , B01J31/08 , C07C51/44 , C07C51/47 , B01J2231/349 , B01J2231/766 , B01J2531/002
摘要： A system and method for removing acetaldehyde from an acetic acid system are disclosed. The method includes, providing a light-ends stream, comprising carbon monoxide, carbon dioxide, acetaldehyde, methyl iodide, methyl acetate, water, acetic acid, or mixtures thereof; condensing the light-ends stream to form one or more liquid phase compositions and a vapor phase composition, comprising a majority of the carbon monoxide and carbon dioxide and a minor portion of the acetaldehyde, methyl iodide, water, and acetic acid; contacting the vapor phase composition with a solvent to produce a liquid stream, comprising methyl iodide, acetaldehyde, and a portion of the solvent; and contacting the liquid stream, and optionally a polyol compound, with an acid catalyst to convert a portion of the acetaldehyde to an aldehyde derivative having a higher boiling point than acetaldehyde.
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公开(公告)号：US11680735B2
公开(公告)日：2023-06-20
申请号：US17313189
申请日：2021-05-06
发明人： Kenneth Joseph James , Brian Jeffrey Waibel , Kenneth Richard Krewson , Kim Ferrara , Curtis Ebersold
IPC分类号： F25B7/00 , F25B9/00 , F25B9/10 , F25B25/00 , F25B49/02 , G01N30/20 , G01N30/30 , G01N30/54 , B01D15/16 , B01D15/40 , B04C5/081 , B04C5/085 , B04C9/00 , C07C45/79 , C07C51/47 , C07C67/56 , C07C231/24 , C09K5/04
CPC分类号： F25B25/005 , B01D15/165 , B01D15/40 , B04C5/081 , B04C5/085 , B04C9/00 , C07C45/79 , C07C51/47 , C07C67/56 , C07C231/24 , C09K5/041 , F25B7/00 , F25B9/002 , F25B9/008 , F25B9/10 , F25B49/02 , G01N30/30 , G01N30/54 , B04C2009/004 , C09K2205/106 , C09K2205/13 , C09K2205/132 , F25B2600/2513 , F25B2700/21171 , G01N30/20 , Y02P20/54
摘要： Provided is a chiller and system that may be utilized in a supercritical fluid chromatography method, wherein a non-polar solvent may replace a portion or all of a polar solvent for the purpose of separating or extracting desired sample molecules from a combined sample/solvent stream. The system may reduce the amount of polar solvent necessary for chromatographic separation and/or extraction of desired samples. The system may incorporate a supercritical fluid chiller, a supercritical fluid pressure-equalizing vessel and a supercritical fluid cyclonic separator. The supercritical fluid chiller allows for efficient and consistent pumping of liquid-phase gases employing off-the-shelf HPLC pumps. The pressure equalizing vessel allows the use of off-the-shelf HPLC column cartridges. The system may further incorporate the use of one or more disposable cartridges containing silica gel or other suitable medium. The system may also utilize an open loop cooling circuit using fluids with a positive Joule-Thompson coefficient.
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公开(公告)号：US20190201467A1
公开(公告)日：2019-07-04
申请号：US16299683
申请日：2019-03-12
申请人： KING SAUD UNIVERSITY
发明人： Awaad Amani SHAFEEK , Reham Moustafa EL-MELIGY , Mohammed Sobhy MARZOUK , Shroog Mohamed ALOTAIBY
IPC分类号： A61K36/31 , C07C51/42 , A61K31/22 , A61K31/20 , C11B1/10 , B01D15/42 , C07C67/58 , A61K9/00 , C07C67/56 , B01D11/02 , A61K31/225 , C07C51/47
CPC分类号： A61K36/31 , A61K9/0053 , A61K31/20 , A61K31/22 , A61K31/225 , A61K2236/00 , A61K2236/33 , B01D11/0288 , B01D11/0292 , B01D15/426 , C07C51/42 , C07C51/47 , C07C67/56 , C07C67/58 , C11B1/10 , A61K2300/00 , C07C69/675 , C07C53/126 , C07C59/90
摘要： The present invention relates to extracts, compounds isolated from Cakile arabica for use in the treatment of ulcer and to pharmaceutical compositions thereof.
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公开(公告)号：US20180362437A1
公开(公告)日：2018-12-20
申请号：US16021861
申请日：2018-06-28
申请人： LG CHEM, LTD.
发明人： Jong Hun SONG , Se Won BAEK , Sul Hee YOO , Yoon Jae MIN
CPC分类号： C07C51/44 , B01D3/00 , B01D3/143 , B01D11/04 , C07C51/43 , C07C51/47 , C07C51/48 , Y02P20/57 , C07C57/04
摘要： This disclosure relates to a method for continuous recovery of (meth)acrylic acid and an apparatus used for the recovery method. The method of continuous recovery of (meth)acrylic acid according to the present invention may minimize loss of (meth)acrylic acid particularly in the distillation process, and yet enables stable operation of the distillation process and energy reduction.
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公开(公告)号：US20180326323A1
公开(公告)日：2018-11-15
申请号：US15776838
申请日：2016-11-22
CPC分类号： B01D15/363 , B01J41/05 , C07C51/47 , C07C53/122 , C12P7/52
摘要： A method for chromatographically separating propionic acid from a liquid feed mixture including propionic acid and a carbohydrate by passing the liquid feed mixture through a bed including a strong base anion exchange resin.
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